condition mean min max ZT0-3 0.029766016999999995 0.0 0.05953203399999999 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.05200522533333333 0.0 0.10401045066666666 ZT20-23 0.026502522 0.0 0.053005044